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Subproject: Investigations of microstructure and defects in superconducting materials

Research project context: »WP2 Advanced electrical and structural characterization«

Investigations of microstructure and defects in superconducting materials  

Abstract: The preparation techniques together with the specific introduction of nano-scaled particles lead to a distinct microstructure and microscopic defects.

  WP2 Advanced electrical and structural characterization
 
 
  Research Project Information     Subproject Information
Runtime: Since 2006-10-21
Project coordination: Prof. Harald Weber
 
Project runtime: Since 2006-10-23
Scientific coordination: Dr. Pvel Kovac

Part of this KT will be directed to the investigation of crystal defect formed during trapping of nanoparticles by the growing Y123 crystal. The macroscopic and macroscopic concentration inhomogeneity of nano-particles as well as their Oswald ripening during solidification, size and misalignment of subgrains and twin spacing refinement will be characterised by electron microscopy, and high resolution polarised light microscopy (HRPLM). The influence of low concentration additives, influencing the interface energies of the phases present in the system, on crystal defect formation will be investigated. Cracking during sample oxygenation will be studied by combination of HRPLM and unique magnetoscan technique developed at TUW. The results obtained will be used as a feedback for sample preparation in KT1.2.